Reiko Uegaki

Stress compounds in the leaves of Nicotiana undulata induced by TMV inoculation

Abstract In leaves of Nicotiana undulata inoculated with TMV, 19 sesquiterpenoids were detected as stress compounds. Among them, dehydrocarissone, capsidiol 3-acetate, aubergenone, 4- epi -aubergenone, trans -dihydrocarissone, 1,2-dehydro-α-cyperone and 3- epi -3-hydroxysolavetivone are novel tobacco stress compounds.

Sesquiterpenoid stress compounds from Nicotiana species

Abstract Solavetivone, 3-hydroxysolavetivone, solanascone, phytuberin and phytuberol were identified as stress compounds in leaves of Nicotiana tabacum cv Samsun NN. N. sylvestris , which is the maternal progenitor of N. tabacum , produced all the above compounds except 3-hydroxysolavetivone. In the F 1 , hybrid of N. tabacum and N. glutinosa , all the stress compounds produced by N. tabacum and N. glutinosa , respectively, were accumulated.

Stress compounds from Nicotiana rustica inoculated with TMV

Abstract Three new sesquiterpenoid stress compounds, occidenol, occidentalol and trans -occidentalol, have been isolated from the leaves of Nicotiana rustica inoculated with TMV.

Sesquiterpenoid stress compounds from Nicotiana rustica inoculated with TMV

Abstract Sesquiterpenoid stress compounds, occidol, occidol isomer-1 occidol isomer-2, occidol acetate and phytuberin have been isolated from the leaves of Nicotiana rustica inoculated with TMV. Isomers 1 and 2 and the acetate are sesquiterpenoids not previously reported in nature.

Cembrane-derived diterpenoid having a carbotricyclic skeleton

Abstract A novel carbotricyclic diterpenoid, 18-oxo-3-virgene, has been isolated from the waxy, surface resins of tobacco. Its structure was determined by spect

Nicotiana tabacum cv. Burley

Many acyclic terpenoids such as neophytadiene (1),1) phytofuran,2) farnesylacetone) and hexahydrofarnesyl-· acetone ) have been reported as aroma constituents of tobacco and of these compounds the diterpenoid hydrocarbon, neophytadiene (1), is well known to be by far the major neutral volatile constituent of tobacco. We report here the isolation of a new acyclic diterpenoid hydrocarbon, 7,11, 15-trimethyl-3-methylene-l ,6, 10, 14hexadecatetraene (3), which has been tentatively named geranylgeraniadiene, being structually-related to neophytadiene (1), from the neutral volatiles of Burley tobacco (Nicotiana tabacum). The structure of geranylgeraniadiene (3) corresponds to that of the dehydrated compound from geranylgeraniol (4).